Mixing attachment for carbureters.



A. G. STEWART, MIXING ATTACHMENT ron OARBUB'BTERS.

APPLIOATION IXLED 00T. 31.1910..

Patented m2221912.

'atraen "c, srnwana', or Lo'sLANe'ELEs, antisemita. 'f

To all whom it muy ccacem 'y Be it known'that I, ALFREDO. STEWART, a

citizeny of theUnitedStates, residing at Los.

Angeles, in the -count-y of LosjAngeles and State -of.,California, have .invented a new and useful'Mixing Attachment for Carbureters, of which the followingis a, specifica tion.

This viiivmtitm relatesto an attachment more perfect Vmixture of the oil and air be ore the mixtureenters the engine, thvattachment being particularly adapted for: use when heavy oils' are supplied to the carbureter', such oils being diilicult to vaporize and liable to separation from the mixture in passage from the carbureter to the engine.

A further oqbject ofthe invention is to provide for forcible atomization of the oilA to facilitate the mixture thereof with the air'.

hereinafter.

The accompanyin drawings illustrate the invention, and re erringthereto: Figure 1 is a vertical section of the mixing attachment. Fig. 2 is a horizontal section on line :v2-m2 in Fig. l.' I

The attachment comprises a case 1 pro vided with an inlet pipe 2 for attachment to the carbureter or the throttle` thereof, and With an outlet 'pipe or 'chamber Bfor connection tothe engmc. The case 1 ymay be 'formed as a vertical cylinderand thejinlet pipe 2 preferably extends tangentially therelntdso that ythe mcomingmixtun'e is given'a swirl- Other objects of the invention will appear ing movement inthe-chamber vG between case.'

l and pipe 3, tending' toseparate the heavier particles by vertical action.' The. chamber 6 constitutes an inlet chamber, andl the pipe 3 constitutes a mixing and outletchamber'. The outlet pipe 3 extends down te the bot-l tom 4 of the case 1, and is yprovided with a plurality of openings Ior perforations 5 in its Wall for passage of mixture into the putlet pipe 3 from the annular space or chamber 6, between the pipe 3 and the'case 1.

The bottom 4 of the case is provided with a depression ortrough 8 to receive the unvaporized or condensed oil deposited in case l, said trough 8 communicating ivith a duct 0 extending in the bottom member 4 and leading to an opening l0 in a chamber 11,

formed in a member 12 extending through the bottom member 4, and having its upper and. converging end terminating in restricted opening 13. A pipe 14 for commu- 'any suitable meansJ for example tion oft murine 'srracnmnur ron cansoanrnas..

'i Specification of Letters Patent.' 1 :Ptit@H13-(taly Mil/1226, 1912.v "'appiieaupn inea ombe' s1, 1ero. serial-no. esbozo.' 'p

nicating Ielastic through the bottom' or member 12 and up'- Wardly within the chamber 11 therein into proximity of the opening '13 atthe top 'there-l of, saidp'ipe 14 belng connected to a suitable source of elastic fluid pressure IW ereby .elastic fluid `is discharged from ysaid pi e through'the o enin'g 13 threbydrawing t e l.oil upwardly rom the'chamber 1 1by ejector action and'spraylng or atomizingthe oil into the outlet pipe 3. Elastic lfluid' under fluid pressure f' extends pressure may ,be `supplied topipe 14 from` exhaust gases from the for this engine may be use Puross- A, T e'opleration isps-follows: In the' operae engine, air isdrawn into the carbureter` and mixing ,'-attachment carrying with `it a certain-proportion of oil 0r fuel supplied thereto by the carburetor. The mixture of air, vapor and oil' particles asses through theinlet tube intothe cham er 6 of thecase 1. The sivirlingmovement imparted `thereto byreason of the, tangential entry of*` the inlet causes tlie.unvaporized particles of oil to pass outwardly and to` be'. deposited Aonthe outer wall of'said case, and fi, eventually to descend into`th`e trou h .8,

while the air and .vapor :passthroug the perforations 5 into the outletv pipe 3.. Ex-

haust gases'under pressure bemgfsuppliedy through the pipe 14,.the resulting blast pr- 'duced through` the pipe 14 into the mixing outlet pipe 3 causes the oil to be drawn up- '.wardly from the well 10 and to be discharged in a spray or atomized conditionI into'the mixture 1n the mixing chamber outletpipe 3, thereby insuring`complete mixing with' the air of all ofthe oil'taken up at the carlbureter, even when the oil is so heavyfthat a. large proporhon passes over fromthe car-f bureter in an'unvaporized state.- Any suitable source of elastic uid pressure may be used for supplying gases to the pipe 14.

What I claim'isz. .5

.1. A` mixing device for carbureters,`com'- prising'a case formed with 'an inlet chamber yand. lwith-,inlet means `for `said chamber adapted for connection to a carbureter for supplying `oil and air thereto, an outlet chamber extending Within the aforesaid chamber and provided with openings for passage of air and 'v-por from the inlet the compressed air or4 chamber to said outletchamber,rmeans for collecting oil in the bottom of said inlet i the oil tromsaid oil collecting means into said loutlet chamber.

2. A mixing attachment for carbureters,

comprising a case provided with an inletv chamber, inlet means adapted for connection to a carbureter and communicating tangentially with lsaid inlet chamber, an outlet chamber extending Within said inlet chamber in the central portion thereof, and provided with perforations establishing, cominunlcation between said inlet and outlet chambers, mea-ns for collecting oil in the lower portion of said inlet chamber, injector means connected with said oil collecting means and having an outlet communicating With Said outlet chamber and an elastic fluid supply pipe connected to said injector to discharge a blast of elastic Huid through the injector and through the outlet thereof, to supply the atomized oil from the oil collectng 1neans into the outlet chamber.

ln testimony whereof, I havehereunto set my hand at Los Angeles, California, this 18th day of October, 1910.

ALFRED C. STEWART. In presence oit- ARTHUR P. KNIGHT, FRANK L. A. GRAHAM, 

